Figure 9: (A) Velocity-depth result of the inversion (top) for Line E (upper Jaramillo) and its standard deviation (bottom). The solid black contour beneath the topography shows the soil thickness with white error bars showing the uncertainty at intervals of every fourth station. The solid black contour at depth depicts the mean regolith thickness as inferred by the 2.95 km s−1 velocity contour. The dashed lines above and below are the minimum (2.5 km s−1) and maximum (3.4 km s−1) contours, respectively, from which the white error bars were determined. The inverted blue triangles show a subset of the receiver stations. Note the sharp horizontal change in velocities at x = ~110 m. This an imaging artifact from having a sharp kink in the line at the base of the valley. Vertical exaggeration is 2:1. (B) An identical display, however for the Line F (lower Jaramillo) results with error bars plotted every fourth station. Vertical exaggeration is 2:1.